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OBJETIVO: Comparar o neurocomportamento de recém-nascidos a termo pequenos (PIG) e adequados (AIG) para a idade gestacional, filhos de mães adolescentes. MÉTODOS: Estudo transversal prospectivo de nascidos a termo AIG e PIG, com 24-72 horas de vida, sem afecções do sistema nervoso central. Os neonatos foram avaliados por meio da Neonatal Intensive Care Unit Network Neurobehavioral Scale (NNNS) para: habituação, atenção, despertar, controle, manobras para a orientação, qualidade dos movimentos, excitabilidade, letargia, reflexos não ótimos, assimetria, hipertonia, hipotonia e sinais de estresse e abstinência. A comparação dos grupos AIG e PIG foi feita por análise de variância e teste do qui-quadrado. Aplicou-se a regressão multivariada para analisar os fatores associados ao escore de cada variável do NNNS. RESULTADOS: Dos 3.685 nascidos no local do estudo, 928 (25%) eram de mães adolescentes. Desses, 477 satisfizeram os critérios de inclusão, sendo 419 (88%) AIG e 58 (12%) PIG. A análise univariada não mostrou diferença em nenhuma das variáveis da NNNS entre os PIG e os AIG. Na análise multivariada, os PIG nascidos de parto vaginal apresentaram menor escore na variável qualidade de movimentos do que os nascidos por cesárea. Os PIG nascidos com anestesia local ou sem anestesia apresentaram maior escore na variável excitabilidade do que os nascidos sob anestesia loco-regional. Os PIG femininos tiveram menor escore na variável sinais de estresse/abstinência que os masculinos. CONCLUSÃO: Os recém-nascidos PIG de mães adolescentes mostraram menor qualidade de movimento, mais excitabilidade e mais sinais de estresse, em associação com o sexo do neonato e com variáveis relacionadas ao parto. OBJECTIVE: To compare the neurobehavior of small (SGA) and adequate (AGA) for gestational age full-term neonates born to adolescent mothers. METHODS: This prospective cross-sectional study included full-term newborn infants aged 24-72 hours, free from central nervous system malformations and born to adolescent mothers at a single center in Brazil. Infants were assessed with the Neonatal Intensive Care Unit Network Neurobehavioral Scale (NNNS) for: habituation, attention, arousal, regulation, handling, quality of movement, excitability, lethargy, nonoptimal reflexes, asymmetry, hypertonia, hypotonia, and stress/abstinence signals. The chi-square test and analysis of variance were used to compare SGA and AGA infants. Multivariate regression was used to analyze factors associated with the score of each NNNS variable. RESULTS: Of 3,685 infants born in the study hospital, 928 (25%) had adolescent mothers. Of these, 477 infants met the inclusion criteria: 419 (88%) were AGA and 58 (12%) were SGA. Univariate analysis did not show any differences between AGA and SGA neonates in terms of NNNS variables. Multivariate analysis showed that SGA neonates born by vaginal delivery had lower scores for quality of movements than those born by caesarean section. The SGA neonates born with local or without anesthesia had higher scores for excitability than those born with spinal anesthesia. Additionally, female SGA neonates had lower scores for stress/abstinence signals than males. CONCLUSION: SGA neonates born to adolescent mothers showed poorer quality of movements, more excitability and more signals of stress in association with sex of infant and variables related to delivery

Neurocomportamento de recém-nascidos a termo, pequenos para a idade gestacional, filhos de mães adolescentes